Question: What is the 2018 population of the host of the 1920 Summer Olympics that featured the country containing both the village of Wengen and the birthplace of Fränzi Aufdenblatten?
Context: Document 1: Belgium: Kingdom of Belgium Koninkrijk België (Dutch) Royaume de Belgique (French) Königreich Belgien (German) Flag Coat of arms Motto: ``Eendracht maakt macht ''(Dutch)`` L'union fait la force'' (French) ``Einigkeit macht stark ''(German)`` Unity makes Strength'' Anthem: ``La Brabançonne ''`` The Brabantian'' Location of Belgium (dark green) -- in Europe (green & dark grey) -- in the European Union (green) Capital and largest city Brussels 50 ° 51 ′ N 4 ° 21 ′ E ﻿ / ﻿ 50.850 ° N 4.350 ° E ﻿ / 50.850; 4.350 Official languages Dutch French German Ethnic groups see Demographics Religion (2015) 60.7% Christianity 32.0% No religion 5.2% Islam 2.1% Other religions Demonym Belgian Government Federal parliamentary constitutional monarchy Monarch Philippe Prime Minister Charles Michel Legislature Federal Parliament Upper house Senate Lower house Chamber of Representatives Independence (from the Netherlands) Declared 4 October 1830 Recognised 19 April 1839 Area Total 30,528 km (11,787 sq mi) (136th) Water (%) 6.4 Population 1 August 2018 census 11,420,163 (79th) Density 374.2 / km (969.2 / sq mi) (36th) GDP (PPP) 2018 estimate Total $550.664 billion (38th) Per capita $48,258 (20th) GDP (nominal) 2016 estimate Total $562.229 billion (23rd) Per capita $49,272 (17th) Gini (2011) 26.3 low HDI (2017) 0.916 very high 17th Currency Euro (€) (EUR) Time zone UTC + 1 (CET) Summer (DST) UTC + 2 (CEST) Driving side right Calling code + 32 ISO 3166 code BE Internet TLD. be The flag's official proportions of 13: 15 are rarely seen; proportions of 2: 3 or similar are more common. The Brussels region is the de facto capital, but the City of Brussels municipality is the de jure capital. The. eu domain is also used, as it is shared with other European Union member states.
Document 2: Fränzi Aufdenblatten: Born in Zermatt, Valais, Aufdenblatten made her World Cup debut in March 2000 in a giant slalom at Sestriere. She scored four podium finishes on the World Cup: one win in a super-G in Val-d'Isère in December 2009, and three third places in downhill at Haus im Ennstal (2004), Bad Kleinkirchheim (2006), and Lenzerheide (2014). Aufdenblatten competed in three Winter Olympics (2002, 2006 and 2014) and her best finish was a sixth place in the 2014 super-G at Rosa Khutor.
Document 3: Alps: Some high mountain villages, such as Avoriaz (in France), Wengen, and Zermatt (in Switzerland) are accessible only by cable car or cog-rail trains, and are car free. Other villages in the Alps are considering becoming car free zones or limiting the number of cars for reasons of sustainability of the fragile Alpine terrain.
Document 4: Switzerland at the 1920 Summer Olympics: Switzerland competed at the 1920 Summer Olympics in Antwerp, Belgium. 77 competitors, all men, took part in 45 events in 13 sports.
Answer: 11,420,163
Reasoning steps: Fränzi Aufdenblatten >> place of birth Answer: Zermatt
Where are the villages of Wengen and Zermatt located? Answer: Switzerland
Switzerland at the 1920 Summer Olympics >> country Answer: Belgium
what is the population of Belgium in 2018 Answer: 11,420,163